There are a number of reasons why a tier-one provider of Japanese/English translation should avoid China.

Essentially all Japanese-to-English and English-to-Japanese translators working in China are translating from one foreign language to another (i.e., working between Japanese and English). Professional translators realize that is a recipe for failure.

Security concerns (this should need no explanation; China is demonstrably a rogue state in this area).

Concerns about repeating the serious strategic error made by myopic corporations in the free world that valued cheap labor over ethics and human values when they surrendered their manufacturing businesses to China. We firmly refuse to be a part of doing something similar to the translation business.

For the above reasons, we do not even respond to inquiries coming from Chinese entities.

Regardless of who they purport to be or represent, unknown people embracing the "everything-for-free" new-age strategy of using a free email account such as gmail either are highly unlikely to be able to afford professional language services or have some other reason for using an email account that can be created anonymously. Inquiries from people using such free email accounts will be ignored without exception.